Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number SL15019 ITEM 47 found under O Ring by Sss Clutch Company Inc. The National Stock Number assigned to this part is 5331012806787, and the Federal Supply Class is . Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like SL15019 ITEM 47.